Improvement in shutter-workers



- i PATENTE JUL 18 A1871 117226 PATENT QEEICE.

LEWIS H. WATSON, OF IITTSBURG, PENNSYLVANIA.

lMPROVEMENT IN SHUTTER-WORKERS.

Speeioation forming part of Letters Patent No. 117,226, dated July 18,1871.

To all whom it may concern:

Be it known that I, LEwIs H. WATsoN, of Pittsburg, Allegheny county,Pennsylvania, have invented certain new and useful Improvements inDevices for Opening and Closing Shutters, of which the following is aspecification:

The nature of my invention consists in the construction of a cheap andsimple device for opening and closing shutters, as will hereafter bemore fully set forth.

In the accompanying drawing, Figure 1 represents a side elevation of theexterior of a shutter to which my device is attached. Fi g. 2 is a sideview of the operating shaft for closing the shutter. Fig. 3 is a sideview of the shaft for operating the spring-catch. Fig. 4 is a plan viewof the plate through which the lever operates on the shutter.

A represents the window-sill and B the shutter. Extending outwardthrough the sill from the interior of the house is the shaft C, having ahandle, D, upon its inner end, and a crank, E, upon the outer. Pivotedto the crank is the lever F, which consists of a flat bar, having itslower end twisted in the shape of an auger and passing through a smallslot, a, cut in the ear b of the plate G. Secured to the sill is a smallcasting, I, in which is pivoted the catch J, and which is provided witha spring, c, so as to keep the catch always pressed upward.

Extending sired to open the shutter, the knob c on the end g of theshaft L is turned, causing the cam on its opposite end to bear down onthe spring-catch J until the shutter-hook is released. The knob D on theend of the shaft C is then turned, causing the crank to force theaugenshaped end of the lever F downward into the slot a, thereby actingas a lever to swing the shutter outward. The shaft passes into the slotuntil the twisted or auger-shaped part is passed, when the flat portionacts as a stop, so as to prevent the shut ter from being swung backwardand forward.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The shaft O, crank E, lever F, and slotted plate G, when combined tooperate as described.

In testimony that I claim the foregoing as my own I hereby affix mysignature in the presence of two witnesses.

LEWIS H. WATSON.

Witnesses:

R. H. MARSH, Tiros. S. MERCER.

